For those of you that keg on a consistent basis, I’ve had a recurring issue that I just can’t figure out. We tapped our most recent batch of IPA about a week and a half ago and found it pretty disappointing.
The flavor was flat, the aftertaste was metallic – it tasted like all the materials were stale. I almost threw the entire batch out, but a few folks tried it last Monday and claimed I was exaggerating. I tried it that evening (after probably 4-5 pints had been poured from the keg) and tasted the same issues. Then I tried it once more last night, and it tastes terrific and very consistent with our previous batches. This is the second or third time I’ve had this happen – it’s not just beer in the line or trub from the bottom of the keg that’s creating these flavors. Any ideas?